El Hombre,, Ours has a big oil cooler that sits in front of the radiator. It has one big hose(size of a Radiator Hose) that goes into it and out,,and then pair of small ones like you would see on a truck or car. its not part of the radiator.I found a new one on broken tractor .com
but its almost 800.00 . Ill probably take this one to the Radiator shop and see if they can do anything with it,,as its rough